The server in our laboratory has some problems. A PhD student is running computation which has very heavy I/O load, but no CPU load. The lack of CPU load means that there's nothing which would hold back the process to hog the hard drive. Many of you are server administrators so you know the concept of "server load". If it is above 3, then the server is under very heavy load, above 6-7 it can happen that you cannot log-in remotely. So far my techniques is that I keep an open root console on my desktop machine at the university, that console is always alive. Last week I saw load above 22. Today I had to take a screenshot, so when I'll be a grandpa I can show it to my grandchildren: load above 76.
The machine is a server hardware, quad core with 16GB RAM, I don't exactly know the HDD subsystem, browsing the /proc I think it's some kind of SAS disks. It is running Ubuntu Server LTS. Question: how can I limit the I/O access of a process? I've seen numerous articles on disk quotas, network bandwidth tuning, some on CPU load tuning, but no I/O load tuning. Thanks, Csaba The weirdo guy with an accent who always comes by bike to the UG meetings -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en
